Fast identification of trace substance by single-photon detection of characteristic Raman scatterings with gated coincidence technique and multipixel photon counters
Applied Optics, Vol. 49, Issue 14, pp. 2601-2605 (2010)
http://dx.doi.org/10.1364/AO.49.002601
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Abstract
We report a method for fast identification of trace substances. It is based on the single-photon detection of characteristic Raman scatterings by using a gated dual-wavelength coincidence technique and multipixel photon counters. The objective of this study is to overcome the drawback of the low-speed detection of trace substances by Raman spectroscopy and other ultraweak spectra. Analysis indicates that a trace substance in the single-molecule level can be identified within 1 ms. As an example, a fast measurement of a
© 2010 Optical Society of America
OCIS Codes
(040.1880) Detectors : Detection
(300.6450) Spectroscopy : Spectroscopy, Raman
(040.1345) Detectors : Avalanche photodiodes (APDs)
ToC Category:
Detectors
History
Original Manuscript: January 12, 2010
Revised Manuscript: March 18, 2010
Manuscript Accepted: April 5, 2010
Published: May 4, 2010
Virtual Issues
Vol. 5, Iss. 9 Virtual Journal for Biomedical Optics
Citation
Guoqing Zhang, Xiaobo Hu, Ru Yang, Chunling Zhang, Kun Liang, and Dejun Han, "Fast identification of trace substance by single-photon detection of characteristic Raman scatterings with gated coincidence technique and multipixel photon counters," Appl. Opt. 49, 2601-2605 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-14-2601
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